They look great, but I have a question... Are these trees 2D, 2-1/2D or 3D? I ask because 2D and 2-1/2D trees don't always accept lighting well or cast realistic shadows. This is not a problem with trees in the background, but becomes apparent when they are in the foreground. I don't think this will affect my buying decision because there are good reasons to use all types, but I just want to know which category these are in before making that purchase. Thanks - you know I love your stuff, and have bought a lot. Wish you would consider putting together some mega packs and offering bulk rates ;-)